The Wire-tailed Swallow has fine outer tail feathers that extend like wires. It is seen alone, in pairs, or in small flocks over open areas near water.
Adults have blue upperparts, a chestnut head and white underparts. The outer tail feathers extend into fine streamers; females and young birds can have shorter streamers.
A field study in Tamil Nadu recorded nests beneath bridges and reported that both sexes took part in building the mud nests.
An extinction-risk assessment has not been added yet.